how to delete everything after log in combo on multiple lines

[y]

ex.
abc123@gmail.com:123456 abdefga bdefgab def gabd efg
def456@gmail.com:789123 prtu dfpr tudfpr tudf prtudf

to:

abc123@gmail.com:123456
def456@gmail.com:789123

[PeterJones]

@y ,

find = (?-s)\h.*
replace = empty
search mode = regular expression

[y]

@PeterJones said in how to delete everything after log in combo on multiple lines:

(?-s)\h.*

thanks